1. Customers are requested not to open the packing before paying. 顾客们被要求在付款前不要打开包装。
2. Critics say paying students sends a message that money is the only valuable reward. 评论家说付钱给学生传达了钱是唯一有价值奖赏的讯息。
3. Paying children to do extra work around the house, however, can be useful. It can even provide an understanding of how a business works. 无论如何，付钱让孩子作额外的家务活还是有用的。这正能够提供给孩子们一些对商业工作的理解。
英英解释
adj.
1. yielding a fair profit
2. for which money is paid
